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United States Patent | 6,001,294 |
Inaba ,   et al. | December 14, 1999 |
A screw connector is manufactured with an injection metal mold. The screw connector includes a connector main body and a nut embedded in the connector main body. An axis of the nut extends in a forward and backward direction of the connector main body. The screw connector further includes a first opening located on a front side of the nut for receiving by a bolt of a mating connector and a first columnar space located on a rear side of the nut for receiving a distal end portion of the bolt. The method includes three steps. The first step is setting the metal mold in such a state that the nut is held by a front projection portion and a rear projection portion. This front projection portion projects rearwardly and has a small diameter portion and a portion having larger diameter than said small diameter portion. This rear projection portion projects forwardly so as to be in contact with a rear end face of said nut. The second step is injecting a melted resin in said metal mold. The third step is separating a resin molded product from said metal mold.
Inventors: | Inaba; Shigemitsu (Shizuoka-ken, JP); Yamamoto; Masayuki (Shizuoka-ken, JP) |
Assignee: | Yazaki Corporation (Tokyo, JP) |
Appl. No.: | 907998 |
Filed: | August 11, 1997 |
Nov 24, 1992[JP] | UM4-80793 |
Current U.S. Class: | 264/278; 264/275; 425/125; 425/129.1 |
Intern'l Class: | B29C 045/14 |
Field of Search: | 264/263,275,269,278 425/125,129.1 |
2741288 | Apr., 1956 | Johnson | 264/263. |
3077003 | Feb., 1963 | Hubson | 264/275. |
3081497 | Mar., 1963 | Scherry | 18/59. |
3445559 | May., 1969 | Siteman | 264/263. |
4075273 | Feb., 1978 | Liautaud | 264/275. |
4788022 | Nov., 1988 | Sakayori et al. | 264/275. |
Foreign Patent Documents | |||
64-035881 | Feb., 1989 | JP. |